Die.



F. WI'EL'AND.

DIE.

' ur IIIIIIIIIII np 1111111111 o. .1 ,O92,882, Patented Apr. 14, 1914. 2 nnnnnn s BERT 1.

F. WIELA-ND.

' DIE.

APPLICATION FILED SEPT. B, 1910.

1,092,882. Patented Apr. 14, 1914,

2 SHEETS-SHEET 2.

Attest: Inventor:

I M Atty FRIEDFJICH WIEL'KND, OF EAST RUTHERFORD, NEW JERSEY, ASSIGNOR TO THE ARLINGTON COMPANY, OF NEWYORK, N. Y A CORPORATION OF NEW JERSEY.

DIE.

To all 407L077! it 'may conc ern:

Be it known that I, FRIEDRICH Wmm m, a citizen of the United States of America,

residing at" EastjRutherfo'rd, New Jersey,

have invented certain new and useful Improvements in Dies, of which the following is a specification.

My invention relates to an improvementin dies, and has especial reference to dies by when the comb is taken from the die the superfluous stock or other material which'adhere to the comb and which is of substantial thickness will be connected to said comb only by thin webs whereby said stock or material may be quickly and easily removed from the molded article and the teeth will have the desired shape without requiring subsequent machine or hand work.

\ In the accompanying drawing, wherein the invention is illustratively exemplified Figure l is a plan View of a male die member according to my invention; F l is a vertical sectional View through the dies when This View represents a section taken on the plane indicated by the line a--a of Fig. 1 looking in the direction of the arrows. Fig. 1 is a vertical sectional view through a portion of the die wherein one-half of an intermediate tooth is formed, the other half of the tooth being formed in the corresponding portion of the companion die. This view represents a'section taken on the plane indicated by the line bb of Fig. 1 looking in the direction of the arrows. Fig. 1 illustrates a section between the cutting edges which are located between adjacent teeth and a view on the plane indicated by the lines 0-0 in Fig. 1 and Fig. 1. Fig. 2 is a similar view of a female die member; Fig. 3 is an enlarged view of a fragment of the die shown in Fig, 1; Fig. 4: is a sectional view taken on the line ;d-d of Fig. 1 and on the line 4% of Fig. 3 looking in the direction of the arrows, one of the die members being shown in dotted lines. Fig. 5 is a plan view of a fragment of a modified form of male die member adapted to produce two combs at one molding operation; and Fig. 6 is a horizontal sectional View taken on the line 6-6 of F g 5, looking in the direction of the arrows, one of the die members being shown in dotted lines.

Referring to the drawings in detail and particularly to Figs. 1 to 4 thereof, 1 designates generally the male die member having the pins 2 for entering the holes 3 in the Patented Apr. 14, 1914.

female die member designated generallyas 1. Inasmuch as both die members are alike a description of one will suffice. Each die member is provided with a depression 5 forv forming the back of the comb, and with de-' pressions 6 for forming the large teeth at either end of the comb. Between the end depressions 6 is a series of 'matrices or depressions 7 vhich are adapted to form the intermediate teeth of the; comb, it being understood that each lateral face of the teeth present a beveled or slightly angular surface.

is required to For the purpose of giving this angular formation to the lateral faces of the teeth, and also for cutting or scoring the material or stock from which the combs are made, in order that the superfluous stock may be readily removed from the completed comb, I provide between eaclrtwo adjacent matrices or depressions in each mold, a cutting surface or edge 8 which :is substantially triangular in shape, so that'when the two die sections are superposed with the bases of the triangular cutting edges to each other, a substantially diamond shaped cutting surface, as seen in' Fig. 4, 'will be formed. '11: now, the stock which isin'; a: plastic or semiplastic condition be fed to the die and forced into the several depressions therein the cut ting edges 8 will act not only to properly work or hand work (except to pull away the superfluous material) is required to put the completed comb in condition to be bufi'ed and polished, or subjected to such other treatment as may be desired. As will be seen from Fig. 4 there is provided adjacent the end mold 6 a cutting edge 8 which has the same function as the other cutting edges 8 and is only slightly differently formed to comes from the die the superfluous materialate teeth. Between adjacent depressions are the cutting surfaces 8 (Fig. 6) and the largerand slightly differently formed cutting surface 8 for the end teeth. Inprinciple and function the die of Figs. 5 and 6 is like that shown in the other figures for where a pair of combs are formed with intermeshing teeth as illustrated in Fig. 5 .the teeth of one comb have between them the teeth of the. second comb which last mentioned teeth are the equivalent of superfluous stock of material thickness so far as the first comb is concerned, and these two combs are connected only by the frail webs that are easily broken whereby the combs are readily separated after they are cold and have been formed. After they are separated they are ready for the bufiing, polishing or other operation as described.

Heretofore in the manufacture of combs, Where dies without cutting edges such as above described have been employed, the comb was takenfrom the die with the superfluous material adhering tightly between the teeth and it was necessary to cut and file this material before the comb was ready for buffing and polishing. Obviously this cutting and filing required skilled labor and the expenditure of considerable time and care for,

each comb, thus adding materially to the cost of the finished product. By the employment of my invention, when the comb in practically a solid body adhered by a very thin web to the comb and may generally be removed therefrom by one pull. The saving in time, labor and cost thus eifected is very substantial and enables these articles Copies of this patent may be obtained for to be produced in better condition and at a lower cost.

Having thus described my invention, what I claim as new and desire to secure by Let ters Patent is 1. In a device for the manufacture of combs, the combination ofopposing dies,

provided between the tooth-forming de pressions with grooved portions whereby the material between the teeth of the comb will be of substantial thickness but will adhereto said teeth. by thin webs that are easily ruptured.

2. The combination with a male die member having a depression for the formation of the back of a comb, end depressions for the formation of the end teeth, and intermediate depressions'for the formation of intermediate teeth, of a female die member having depressions corresponding to and adapted to register with the depressions in the male die-member, the said depressions in both the male and female dies being shallow and scoring knife edges in each die member outlining the back and each tooth, leaving a substantial space between adjacent teeth, whereby when the die members are superposed the scoring-edges of one member will abut and cooperate with the opposing scoring edges of the other member for scoring the material placed between said die members, so that the superfluous material in FRIEDRICH WIELAND.

WVitnesses FRANK SPILL, Orro MUNK.

five cents each, by addressing the Commissioner of Patents, Washington, D. c."

1 line the teeth, at least one of the dies being 

